Now showing items 1-5 of 5

  • Asparagus rust 

    Johnson, Dennis A. (Dennis Allen) (Pullman, Washington : Washington State University. Extension., 1992-02)
  • Bacterial ring rot on potatoes 

    Inglis, Debbie, 1953-; Johnson, Dennis A. (Dennis Allen); Schroeder, Brenda K., 1967-; Benedict, Chris (Pullman, Washington : Washington State University. Extension., 2013-05)
    This fact sheet outlines the disease cycle of ring rot, and approaches for sanitation and control by commercial potato growers and seed potato growers alike.
  • Botrytis neck rot of onion 

    Johnson, Dennis A. (Dennis Allen) (Pullman, Washington : Washington State University. Extension., 1986)
    White varieties of onions are more susceptible than red and yellow, but all are affected by this gray feltlike mold of the Botrytis fungus. Explains symptoms and control and includes a color photograph to aid diagnosis. 2 pages.
  • Curly top of tomato 

    Johnson, Dennis A. (Dennis Allen); Martin, Mark (Pullman, Washington : Washington State University. Extension., 1998)
  • Sampling for nematodes in soil 

    Santo, G. S.; Nyczepir, Andrew P.; Johnson, Dennis A. (Dennis Allen); O'Bannon, J. H. (Pullman, Washington : Washington State University. Extension., 1988-02)